Quantitative analysis of vibrotactile threshold and the effect of vibration frequency difference on tactile perception

Soo Chul Lim, Seung Chan Kim, Ki Uk Kyung, Dong Soo Kwon

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

In this paper, the effect of vibration frequency using a developed tactile display is described. In the first experiment, the skin perception threshold of vibrotactile stimuli at the finger tip is measured. From the experiment, the fingertip (right index finger) vibrotactile threshold is measured when the subjects start to feel the stimulus. The frequency is varied from 6.3 IHz to 398. IHz at a regular dB interval via a small contact area (0.196 mm 2 , 0.785 mm 2 , and 3.142mm 2). The results show a U-shaped curve and the threshold is reciprocally related to the contact area. A second experiment is performed to examine whether a shape display on the fingertip area is possible by changing the vibration frequency without any change in amplitude when passive touch is applied at a tactile display mouse. The subjects were able to discern six different small scale shapes established via different vibration frequencies. From the result of the experiments, we can conclude that vibration frequency can be effectively employed to sense shapes with different heights, even when a stimulus having a fixed amplitude is applied.

Original languageEnglish
Title of host publication2006 SICE-ICASE International Joint Conference
Pages1927-1932
Number of pages6
DOIs
StatePublished - 2006
Event2006 SICE-ICASE International Joint Conference - Busan, Korea, Republic of
Duration: 18 Oct 200621 Oct 2006

Publication series

Name2006 SICE-ICASE International Joint Conference

Conference

Conference2006 SICE-ICASE International Joint Conference
Country/TerritoryKorea, Republic of
CityBusan
Period18/10/0621/10/06

Keywords

  • Frequency
  • Perceived intensity
  • Sensation level
  • Tactile display
  • Threshold
  • Vibrotactile

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